If an org-mode document includes footnotes, and you export to ODT, you get footnotes at the bottom of every page.
There are two ways to achieve this:
Snippet 1: Use footnotes on OpenDocument side, but use custom styles to place the footnotes at the end of the document.
#+odt_extra_styles: <text:notes-configuration
#+odt_extra_styles: text:note-class="footnote"
#+odt_extra_styles: text:default-style-name="Footnote"
#+odt_extra_styles: text:citation-style-name="Footnote_20_Symbol"
#+odt_extra_styles: text:citation-body-style-name="Footnote_20_anchor"
#+odt_extra_styles: text:master-page-name="Footnote" style:num-format="1"
#+odt_extra_styles: text:start-value="0" text:footnotes-position="document"
#+odt_extra_styles: text:start-numbering-at="document"/>
Body text[fn:1][fn:2]
* Footnotes
[fn:1] Footnote one
[fn:2] Footnote two
Snippet 2: Use actual endnotes on OpenDocument side
#+odt_endnote_regexp: .
Body text[fn:1][fn:2]
* Footnotes
[fn:1] Footnote one
[fn:2] Footnote two
The difference between the two snippets is this:
In the first snippet, an org-side footnote is mapped to a `footnote' note-class on OpenDocument side.
In the second snippet, an org-side footnote is mapped to a `endnote' note-cass on OpeDocument side.
For more information see Add support for endnotes · Issue #74
Note that this feature is exclusive to the fork of OpenDocument exporter, i.e. this feature is NOT available in the standard Emacs or Org mode repositories.